JP2007252081A - Circuit protective device and method of interrupting short circuit current method - Google Patents

Circuit protective device and method of interrupting short circuit current method Download PDF

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JP2007252081A
JP2007252081A JP2006071512A JP2006071512A JP2007252081A JP 2007252081 A JP2007252081 A JP 2007252081A JP 2006071512 A JP2006071512 A JP 2006071512A JP 2006071512 A JP2006071512 A JP 2006071512A JP 2007252081 A JP2007252081 A JP 2007252081A
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current
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constant current
branch
circuit
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JP4720559B2 (en
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Hideki Kobori
秀樹 小堀
Takatoshi Otomo
高敏 大伴
Tomohiro Shiozaki
知博 塩崎
Kazumasa Miyamoto
和将 宮本
Nobuyuki Toyoura
信行 豊浦
Masao Mabuchi
雅夫 馬渕
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Omron Corp
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Omron Corp
Omron Tateisi Electronics Co
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly practical circuit protective device that can be applicable to the change of a capacitive load and a resistive load, that controls an inrush current or a short circuit current with a constant current, that drives the capacitive load without interrupting power supply to the load, and that does not affect the drive of other loads, by interrupting a current after supplying the constant current to the short circuit load for a prescribed period of time. <P>SOLUTION: The circuit protective device is made up of a branching/controlling means 2, which controls the operation of an entire device, and output branching means 3, which are provided with a constant current portion 12, an interruption portion 13, an instantaneous interruption portion 14, a current detection portion 15, and an operation/interruption drive portion 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は1台の電源装置から複数の負荷に直流電源を分岐して供給する回路保護装置に係り、特に容量性負荷に対する突入電流や短絡負荷に対する短絡電流に、定電流を流すことにより対応し、容量性負荷に対して電源を停止することなく駆動し、短絡負荷に対して電源を遮断して、他の負荷の動作に影響を及ぼさない回路保護装置に関する。   The present invention relates to a circuit protection device that branches and supplies a DC power supply from a single power supply device to a plurality of loads. In particular, the present invention deals with inrush current for a capacitive load and short-circuit current for a short-circuit load by passing a constant current. The present invention relates to a circuit protection device that drives a capacitive load without stopping the power supply, cuts off the power supply to a short-circuit load, and does not affect the operation of other loads.

従来の回路保護装置は、本出願人が「特許文献1」(出力分岐装置)に開示したように、電源装置からの直流電源入力を複数に分岐して複数の負荷に出力するに際して、分岐した出力ラインに対応して出力ラインを遮断する遮断手段を備え、過電流の流れた出力ラインのみを遮断できるように構成されている。   As disclosed in “Patent Document 1” (output branching device) by the present applicant, the conventional circuit protection device is branched when the DC power supply input from the power supply device is branched into a plurality of outputs and output to a plurality of loads. Corresponding to the output line, a shutting means for shutting off the output line is provided, and only the output line through which the overcurrent flows can be shut off.

これにより、各出力ラインにブレーカを設ける必要がなく、煩雑な接続作業を必要とせず、ブレーカを設置するスペースも必要としないものである。
特開2002−252923号公報
Thereby, it is not necessary to provide a breaker in each output line, no complicated connection work is required, and no space for installing the breaker is required.
JP 2002-252923 A

「特許文献1」に開示された従来の出力分岐装置は、出力ライン毎に遮断手段が動作する過電流が設定されているので、負荷に対応した過電流の遮断ユニットを選定して設置しなければならず、多くの遮断ユニットを準備しなければならない課題がある。   In the conventional output branching device disclosed in “Patent Document 1”, an overcurrent at which the cutoff means operates is set for each output line. Therefore, an overcurrent cutoff unit corresponding to the load must be selected and installed. There is a problem that a lot of shut-off units have to be prepared.

また、出力ラインに接続する負荷が変更された場合には、負荷に最適な遮断電流を有する遮断ユニットに交換しなければならないため、交換する遮断ユニットが無い場合には、負荷を動作させることができなく、生産などに大きな影響を及ぼす課題がある。   If the load connected to the output line is changed, it must be replaced with a breaker unit that has the optimum breaker current for the load. Therefore, if there is no breaker unit to be replaced, the load can be operated. There is a problem that cannot be produced and has a big impact on production.

この発明はこのような課題を解決するためになされたもので、その目的は容量性負荷や抵抗負荷の変更に対応でき、突入電流や短絡電流を定電流で抑制し、容量性負荷に対して電源を遮断することなく継続して駆動するとともに、短絡負荷に対しては定電流を所定時間流した後に電流を遮断することによって、他の負荷の駆動に影響を及ぼさない利便性の高い回路保護装置を提供することにある。   The present invention has been made to solve such a problem, and its purpose is to cope with a change in capacitive load or resistive load. Convenient circuit protection that does not affect the driving of other loads by continuously driving without shutting off the power supply, and by shutting off the current after a constant current flows for a short time to the short-circuit load To provide an apparatus.

前記課題を解決するためこの発明に係る回路保護装置は、電源装置を接続し、電源装置の直流電源出力を複数の負荷に分岐して供給する回路保護装置であって、負荷に流れる突入電流や短絡電流を定電流で抑制し、定電流による抑制時間が所定時間を超える場合には状態情報を出力し、遮断指令によって負荷への定電流を遮断する負荷対応の分岐出力手段と、直流電源出力を分岐出力手段に分岐して供給するとともに、それぞれの分岐出力手段の状況を監視し、状況に応じた制御を実行する分岐/制御手段とを備えたことを特徴とする。   In order to solve the above-described problems, a circuit protection device according to the present invention is a circuit protection device that connects a power supply device and branches and supplies a DC power supply output of the power supply device to a plurality of loads. A short-circuit current is suppressed with a constant current, and when the constant current suppression time exceeds a predetermined time, status information is output, and a load-compatible branch output means that interrupts the constant current to the load by a cutoff command, and a DC power supply output And a branch / control unit for monitoring the status of each branch output unit and executing control according to the status.

この発明に係る回路保護装置は、負荷に流れる突入電流や短絡電流を定電流で抑制し、定電流による抑制時間が所定時間を超える場合には状態情報を出力し、遮断指令によって負荷への定電流を遮断する負荷対応の分岐出力手段と、直流電源出力を分岐出力手段に分岐して供給するとともに、それぞれの分岐出力手段の状況を監視し、状況に応じた制御を実行する分岐/制御手段とを備えたので、分岐出力手段は、容量性負荷の突入電流に対して定電流で抑制し、容量性負荷の充電とともに、容量性負荷に継続して定常電流を流すとともに、短絡負荷の短絡電流に対して定電流で抑制し、定電流が所定時間経過すると、状態情報(遮断要求)を分岐/制御手段に送信し、分岐/制御手段から提供される遮断指令を受けて短絡負荷に流す電流を遮断することができる。   The circuit protection device according to the present invention suppresses an inrush current and a short-circuit current flowing through a load with a constant current, outputs state information when a suppression time due to the constant current exceeds a predetermined time, and sets a constant current to the load with a cutoff command. Branch output means corresponding to a load for interrupting current, and branch / control means for branching and supplying a DC power supply output to the branch output means, monitoring the status of each branch output means, and executing control according to the situation Therefore, the branch output means suppresses the inrush current of the capacitive load with a constant current, charges the capacitive load, continuously flows a steady current to the capacitive load, and short-circuits the short-circuit load. When the constant current is suppressed with respect to the current and the constant current elapses for a predetermined time, the status information (shutoff request) is transmitted to the branch / control unit, and the cutoff command provided from the branch / control unit is received to flow to the short-circuit load. Current It is possible to cross.

また、この発明に係る分岐出力手段は、突入電流や短絡電流を定電流で抑制する定電流部、電流を遮断する遮断部、過大電流に対して瞬時に反応する瞬時遮断部、電流を検出する電流検出部を備えたことを特徴とする。   Further, the branch output means according to the present invention detects a constant current part that suppresses inrush current and short-circuit current with a constant current, a cutoff part that cuts off the current, an instantaneous cutoff part that reacts instantaneously to an excessive current, and a current. A current detection unit is provided.

この発明に係る分岐出力手段は、突入電流や短絡電流を定電流で抑制する定電流部、電流を遮断する遮断部、過大電流に対して瞬時に反応する瞬時遮断部、電流を検出する電流検出部を備えたので、負荷に流れる電流を検出し、検出した電流値に基づいて突入電流や短絡電流に対応して定電流を流し、または定常電流を流すとともに、定電流が所定時間を経過すると、状態情報(遮断要求)を分岐/制御手段に送信し、分岐/制御手段からの遮断指令に基づいて定電流を遮断することができる。   The branch output means according to the present invention includes a constant current part that suppresses inrush current and short-circuit current with a constant current, a cutoff part that cuts off the current, an instantaneous cutoff part that reacts instantaneously to an excessive current, and a current detection that detects current Since the current flowing through the load is detected, a constant current is passed in response to an inrush current or a short-circuit current based on the detected current value, or a steady current is passed. The state information (shutoff request) can be transmitted to the branch / control unit, and the constant current can be shut off based on the shut-off command from the branch / control unit.

さらに、この発明に係る瞬時遮断部は、過大電流を瞬時に検出し、遮断部を瞬時に遮断することを特徴とする。   Furthermore, the instantaneous interruption part according to the present invention is characterized in that an excessive current is detected instantaneously and the interruption part is instantaneously interrupted.

この発明に係る瞬時遮断部は、過大電流を瞬時に検出し、遮断部を瞬時に遮断するので、遮断部の一時遮断動作を迅速に実行して、定電流動作に移行することができる。   Since the instantaneous interruption unit according to the present invention detects an excessive current instantaneously and interrupts the interruption unit instantly, the temporary interruption operation of the interruption unit can be quickly performed to shift to a constant current operation.

また、この発明に係る電流検出部は、過大電流を検出した場合、遮断部に遮断信号を供給して遮断部を遮断することを特徴とする。   Moreover, the current detection part which concerns on this invention supplies an interruption | blocking signal to an interruption | blocking part, when an overcurrent is detected, It is characterized by interrupting | blocking an interruption | blocking part.

この発明に係る電流検出部は、過大電流を検出した場合、遮断部に遮断信号を供給して遮断部を遮断するので、定電流部を起動して定電流を流すことができる。   When detecting an excessive current, the current detection unit according to the present invention supplies a cut-off signal to the cut-off unit to cut off the cut-off unit, so that the constant current unit can be activated to flow a constant current.

さらに、この発明に係る電流検出部は、電流値を検知する電流値検知部と、定電流の継続時間を計時するタイマと、電流値検知部が検知した電流値に基づき、またはタイマが所定時間越えて定電流を計時した場合に、状態情報を分岐/制御手段に送信する送信部とを備えたことを特徴とする。   Furthermore, the current detection unit according to the present invention includes a current value detection unit that detects a current value, a timer that measures the duration of the constant current, and a current value detected by the current value detection unit, or the timer is set for a predetermined time. And a transmitter for transmitting the state information to the branching / control means when the constant current is exceeded.

この発明に係る電流検出部は、電流値を検知する電流値検知部と、定電流の継続時間を計時するタイマと、電流値検知部が検知した電流値に基づき、またはタイマが所定時間越えて定電流を計時した場合に、状態情報を分岐/制御手段に送信する送信部とを備えたので、分岐出力手段の状態を分岐/制御手段に通知することができる。   The current detection unit according to the present invention includes a current value detection unit that detects a current value, a timer that counts a constant current duration, and a current value detected by the current value detection unit, or the timer exceeds a predetermined time. When the constant current is measured, the transmitter / receiver transmits the state information to the branch / control unit, so that the state of the branch output unit can be notified to the branch / control unit.

また、この発明に係るタイマは、所定時間を変更可能なことを特徴とする。   The timer according to the present invention is characterized in that the predetermined time can be changed.

この発明に係るタイマは、所定時間を変更可能なので、突入電流や短絡電流を抑制する定電流を不必要に長い時間流さないようにすることができる。   Since the timer according to the present invention can change the predetermined time, the constant current for suppressing the inrush current and the short-circuit current can be prevented from flowing for an unnecessarily long time.

さらに、この発明に係る定電流部は、定電流を変更可能なことを特徴とする。   Furthermore, the constant current unit according to the present invention is characterized in that the constant current can be changed.

この発明に係る定電流部は、定電流を変更可能なので、直流電源の電流容量や分岐出力手段の遮断要求に応じて定電流を任意に変更することができる。   Since the constant current unit according to the present invention can change the constant current, the constant current can be arbitrarily changed according to the current capacity of the DC power supply or the cutoff request of the branch output means.

また、この発明に係る分岐出力手段は、分岐/制御手段から提供される指令に基づいて定電流部および遮断部の動作/遮断を駆動する動作/遮断駆動部を備えたことを特徴とする。   Further, the branch output means according to the present invention is characterized by comprising an operation / cutoff drive section for driving the operation / cutoff of the constant current section and the cutoff section based on a command provided from the branch / control means.

この発明に係る分岐出力手段は、分岐/制御手段から提供される指令に基づいて定電流部および遮断部の動作/遮断を駆動する動作/遮断駆動部を備えたので、分岐/制御手段から動作指令や遮断指令を提供するだけで、分岐出力手段の動作や遮断を容易に実行することができる。   Since the branch output means according to the present invention includes the operation / shut-off drive unit for driving the operation / shut-off of the constant current unit and the shut-off unit based on a command provided from the branch / control unit, the branch output control unit operates from the branch / control unit. The branch output means can be easily operated or shut off simply by providing a command or shut-off command.

さらに、この発明に係る分岐/制御手段は、装置全体の動作を制御する制御部と、状態情報に基づいて各分岐出力手段の状態を記憶する記憶部、各分岐出力手段に指令を発生するリセット部と、各分岐出力手段を強制的に遮断する遮断トリガを入力する遮断トリガ入力部と、外部機器に各分岐出力手段の状態情報を送信する外部通信部、装置に必要とされる各種電源を供給する内部電源部、各分岐出力手段の遮断を通知するアラーム出力部、各分岐出力手段の動作または遮断を表示する表示部とを備えたことを特徴とする。   Further, the branch / control unit according to the present invention includes a control unit that controls the operation of the entire apparatus, a storage unit that stores the state of each branch output unit based on the state information, and a reset that generates a command for each branch output unit A block trigger input unit that inputs a block trigger for forcibly blocking each branch output unit, an external communication unit that transmits status information of each branch output unit to an external device, and various power sources required for the device An internal power supply unit to supply, an alarm output unit for notifying that each branch output unit is shut off, and a display unit for displaying the operation or cutoff of each branch output unit are provided.

この発明に係る分岐/制御手段は、装置全体の動作を制御する制御部と、状態情報に基づいて各分岐出力手段の状態を記憶する記憶部、各分岐出力手段に指令を発生するリセット部と、各分岐出力手段を強制的に遮断する遮断トリガを入力する遮断トリガ入力部と、外部機器に各分岐出力手段の状態情報を送信する外部通信部、装置に必要とされる各種電源を供給する内部電源部、各分岐出力手段の遮断を通知するアラーム出力部、各分岐出力手段の動作または遮断を表示する表示部とを備えたので、直流電源を分岐した複数の分岐出力手段の状態を監視するとともに、短絡負荷が発生した分岐出力手段を自動的または強制的に遮断することができる。   The branch / control unit according to the present invention includes a control unit that controls the operation of the entire apparatus, a storage unit that stores the state of each branch output unit based on the state information, and a reset unit that generates a command for each branch output unit, A cutoff trigger input unit for inputting a cutoff trigger for forcibly blocking each branch output unit, an external communication unit for transmitting status information of each branch output unit to an external device, and various power sources required for the apparatus Since it has an internal power supply unit, an alarm output unit for notifying that each branch output unit is shut off, and a display unit for displaying the operation or cutoff of each branch output unit, it monitors the status of multiple branch output units that branch off the DC power supply. In addition, the branch output means in which the short-circuit load has occurred can be automatically or forcibly interrupted.

また、この発明に係る制御部は、直流電源がオン状態からオフ状態になる直前の各分岐出力手段の状態(状態情報)を記憶部に保持し、直流電源がオフ状態からオン状態になった時、記憶部に保持された状態と同じ状態から動作の開始を制御する。   In addition, the control unit according to the present invention maintains the state (state information) of each branch output unit immediately before the DC power source is turned off from the on state in the storage unit, and the DC power source is switched from the off state to the on state. At this time, the start of the operation is controlled from the same state as the state held in the storage unit.

この発明に係る制御部は、直流電源がオン状態からオフ状態になる直前の各分岐出力手段の状態(状態情報)を記憶部に保持し、直流電源がオフ状態からオン状態になった時、記憶部に保持された状態と同じ状態から動作の開始を制御するので、各分岐出力手段の動作を自動的に直流電源を切る前の状態から開始することができる。   The control unit according to the present invention holds the state (state information) of each branch output unit immediately before the DC power source is turned off from the on state, and when the DC power source is turned on from the off state, Since the start of the operation is controlled from the same state as that held in the storage unit, the operation of each branch output unit can be automatically started from the state before the DC power supply is turned off.

さらに、この発明に係る回路保護装置の短絡電流遮断方法は、電源装置を接続し、電源装置の直流電源出力を複数の負荷に分岐して供給する回路保護装置の短絡電流遮断方法であって、短絡時の過大電流を検出するステップS1と、瞬時遮断を動作させ、遮断部を一時遮断するステップS2と、定電流を流すステップS3と、定電流を検出するステップS4と、定電流が所定時間を超えたか否かを判定するステップS5と、所定時間を超えた場合には、状態情報を送信するステップS6と、遮断指令を受けて定電流部および遮断部を完全に遮断するステップS7とを備えたことを特徴とする。   Furthermore, the short circuit current interruption method of the circuit protection device according to the present invention is a short circuit current interruption method of the circuit protection device that connects the power supply device and branches and supplies the DC power supply output of the power supply device to a plurality of loads. Step S1 for detecting an excessive current at the time of a short circuit, Step S2 for operating an instantaneous interruption and temporarily interrupting the interruption part, Step S3 for supplying a constant current, Step S4 for detecting a constant current, and a constant current for a predetermined time Step S5 for determining whether or not the predetermined time has been exceeded, Step S6 for transmitting the state information when the predetermined time is exceeded, and Step S7 for completely shutting off the constant current portion and the cutoff portion in response to the cutoff command. It is characterized by having.

この発明に係る回路保護装置の短絡電流遮断方法は、電源装置を接続し、電源装置の直流電源出力を複数の負荷に分岐して供給する回路保護装置の短絡電流遮断方法であって、短絡時の過大電流を検出するステップS1と、瞬時遮断を動作させ、遮断部を一時遮断するステップS2と、定電流を流すステップS3と、定電流を検出するステップS4と、定電流が所定時間を超えたか否かを判定するステップS5と、所定時間を超えた場合には、状態情報を送信するステップS6と、遮断指令を受けて定電流部および遮断部を完全に遮断するステップS7とを備えたので、負荷短絡が発生しても、過大な短絡電流を流さずに、定電流で抑制して、所定時間経過後に定電流を遮断することができる。   A short-circuit current interruption method for a circuit protection device according to the present invention is a short-circuit current interruption method for a circuit protection device to which a power supply device is connected and a DC power supply output of the power supply device is branched and supplied to a plurality of loads. Step S1 for detecting excessive current, step S2 for operating instantaneous interruption and temporarily interrupting the interruption part, step S3 for supplying constant current, step S4 for detecting constant current, and constant current exceeding a predetermined time Step S5 for determining whether or not, a step S6 for transmitting state information when a predetermined time is exceeded, and a step S7 for completely shutting off the constant current portion and the shut-off portion in response to the shut-off command Therefore, even if a load short-circuit occurs, it is possible to suppress the constant current after a predetermined time has elapsed by suppressing it with a constant current without passing an excessive short-circuit current.

この発明に係る回路保護装置は、負荷に流れる突入電流や短絡電流を定電流で抑制し、定電流による抑制時間が所定時間を超える場合には状態情報を出力し、遮断指令によって負荷への定電流を遮断する負荷対応の分岐出力手段と、直流電源出力を分岐出力手段に分岐して供給するとともに、それぞれの分岐出力手段の状況を監視し、状況に応じた制御を実行する分岐/制御手段とを備えたで、分岐出力手段は、容量性負荷の突入電流に対して定電流で抑制し、容量性負荷の充電とともに、容量性負荷に継続して定常電流を流すとともに、短絡負荷の短絡電流に対して定電流で抑制し、定電流が所定時間経過すると、状態情報(遮断要求)を分岐/制御手段に送信し、分岐/制御手段から提供される遮断指令を受けて短絡負荷に流す電流を遮断することができ、容量性負荷や抵抗負荷の変更に対応し、他の負荷の駆動に影響を及ぼすこともなく、利便性の向上をアピールすることができる。   The circuit protection device according to the present invention suppresses an inrush current and a short-circuit current flowing through a load with a constant current, outputs state information when a suppression time due to the constant current exceeds a predetermined time, and sets a constant current to the load with a cutoff command. Branch output means corresponding to a load for interrupting current, and branch / control means for branching and supplying a DC power supply output to the branch output means, monitoring the status of each branch output means, and executing control according to the situation The branch output means suppresses the inrush current of the capacitive load with a constant current, and while charging the capacitive load, the steady current continuously flows to the capacitive load, and the short-circuit load is short-circuited. When the constant current is suppressed with respect to the current and the constant current elapses for a predetermined time, the status information (shutoff request) is transmitted to the branch / control unit, and the cutoff command provided from the branch / control unit is received to flow to the short-circuit load. Shield current It is possible to correspond to changes in the capacitive load and a resistive load, it no influence on the driving of the other load, it is possible to appeal to improve convenience.

また、この発明に係る分岐出力手段は、突入電流や短絡電流を定電流で抑制する定電流部、電流を遮断する遮断部、過大電流に対して瞬時に反応する瞬時遮断部、電流を検出する電流検出部を備えたので、負荷に流れる電流を検出し、検出した電流値に基づいて突入電流や短絡電流に対応して定電流を流し、または定常電流を流すとともに、定電流が所定時間を経過すると、状態情報(遮断要求)を分岐/制御手段に送信し、分岐/制御手段からの遮断指令に基づいて定電流を遮断することができ、定電流を流すことと、定電流を所定時間監視するという単純な構成で、短絡負荷を遮断することができる。   Further, the branch output means according to the present invention detects a constant current part that suppresses inrush current and short-circuit current with a constant current, a cutoff part that cuts off the current, an instantaneous cutoff part that reacts instantaneously to an excessive current, and a current. Since it has a current detection unit, it detects the current flowing through the load, flows a constant current corresponding to an inrush current or a short-circuit current based on the detected current value, or a steady current, and the constant current takes a predetermined time. When the time elapses, status information (shutoff request) is transmitted to the branch / control unit, and the constant current can be shut off based on the shut-off command from the branch / control unit. With a simple configuration of monitoring, a short-circuit load can be cut off.

さらに、この発明に係る瞬時遮断部は、過大電流を瞬時に検出し、遮断部を瞬時に遮断するので、遮断部の一時遮断動作を迅速に実行して、定電流動作に移行することができ、不必要な過大電流から分岐出力手段を保護することができる。   Furthermore, since the instantaneous interruption unit according to the present invention instantly detects an excessive current and instantaneously interrupts the interruption unit, it is possible to quickly execute the temporary interruption operation of the interruption unit and shift to the constant current operation. The branch output means can be protected from unnecessary excessive current.

また、この発明に係る電流検出部は、過大電流を検出した場合、遮断部に遮断信号を供給して遮断部を遮断するので、定電流部を起動して定電流を流すことができ、突入電流や短絡電流を定電流に抑制し、分岐出力手段ならびに分岐/制御手段を保護することができる。   In addition, when detecting an excessive current, the current detection unit according to the present invention supplies a blocking signal to the blocking unit to block the blocking unit, so that the constant current unit can be activated and a constant current can flow. Current and short-circuit current can be suppressed to constant current, and branch output means and branch / control means can be protected.

さらに、この発明に係る電流検出部は、電流値を検知する電流値検知部と、定電流の継続時間を計時するタイマと、電流値検知部が検知した電流値に基づき、またはタイマが所定時間越えて定電流を計時した場合に、状態情報を分岐/制御手段に送信する送信部とを備えたので、分岐出力手段の状態を分岐/制御手段に通知することができ、分岐/制御手段に分岐出力手段の状態を表示し、分岐出力手段の電流(定電流)を遮断することができる。   Furthermore, the current detection unit according to the present invention includes a current value detection unit that detects a current value, a timer that measures the duration of the constant current, and a current value detected by the current value detection unit, or the timer is set for a predetermined time. A transmitter that transmits state information to the branch / control unit when the constant current is exceeded, the branch / control unit can be notified of the state of the branch output unit. The status of the branch output means can be displayed, and the current (constant current) of the branch output means can be cut off.

また、この発明に係るタイマは、所定時間を変更可能なので、突入電流や短絡電流を抑制する定電流を不必要に長い時間流さないようにすることができ、分岐出力手段の遮断を最適に設定することができる。   In addition, since the timer according to the present invention can change the predetermined time, the constant current for suppressing the inrush current and the short-circuit current can be prevented from flowing for an unnecessarily long time, and the branch output means is optimally set to shut off. can do.

さらに、この発明に係る定電流部は、定電流を変更可能なので、直流電源の電流容量や分岐出力手段の遮断要求に応じて定電流を任意に変更することができ、フレキシビリティ性を実現することができる。   Furthermore, since the constant current unit according to the present invention can change the constant current, the constant current can be arbitrarily changed according to the current capacity of the DC power supply or the cutoff request of the branch output means, thereby realizing flexibility. be able to.

また、この発明に係る分岐出力手段は、分岐/制御手段から提供される指令に基づいて定電流部および遮断部の動作/遮断を駆動する動作/遮断駆動部を備えたので、分岐/制御手段から動作指令や遮断指令を提供するだけで、分岐出力手段の動作や遮断を容易に実行することができ、使い勝手の良さをアピールすることができる。   Further, since the branch output means according to the present invention includes the operation / shut-off drive unit for driving the operation / shut-off of the constant current unit and the shut-off unit based on a command provided from the branch / control unit, the branch / control unit. Therefore, it is possible to easily execute the operation and shut-off of the branch output means simply by providing the operation command and the shut-off command, and it is possible to appeal the ease of use.

さらに、この発明に係る分岐/制御手段は、装置全体の動作を制御する制御部と、状態情報に基づいて各分岐出力手段の状態を記憶する記憶部、各分岐出力手段に指令を発生するリセット部と、各分岐出力手段を強制的に遮断する遮断トリガを入力する遮断トリガ入力部と、外部機器に各分岐出力手段の状態情報を送信する外部通信部、装置に必要とされる各種電源を供給する内部電源部、各分岐出力手段の遮断を通知するアラーム出力部、各分岐出力手段の動作または遮断を表示する表示部とを備えたので、直流電源を分岐した複数の分岐出力手段の状態を監視するとともに、短絡負荷が発生した分岐出力手段を自動的または強制的に遮断することができ、利便性の向上を図ることができる。   Further, the branch / control unit according to the present invention includes a control unit that controls the operation of the entire apparatus, a storage unit that stores the state of each branch output unit based on the state information, and a reset that generates a command for each branch output unit A block trigger input unit that inputs a block trigger for forcibly blocking each branch output unit, an external communication unit that transmits status information of each branch output unit to an external device, and various power sources required for the device Since it has an internal power supply section to supply, an alarm output section for notifying the interruption of each branch output means, and a display section for displaying the operation or shutoff of each branch output means, the state of a plurality of branch output means branched from the DC power supply In addition, the branch output means in which the short-circuit load has occurred can be automatically or forcibly cut off, and convenience can be improved.

また、この発明に係る制御部は、直流電源がオン状態からオフ状態になる直前の各分岐出力手段の状態(状態情報)を記憶部に保持し、直流電源がオフ状態からオン状態になった時、記憶部に保持された状態と同じ状態から動作の開始を制御するので、各分岐出力手段の動作を自動的に直流電源を切る前の状態から開始することができ、各分岐出力手段の設定を省き、効率化を図ることができる。   In addition, the control unit according to the present invention maintains the state (state information) of each branch output unit immediately before the DC power source is turned off from the on state in the storage unit, and the DC power source is switched from the off state to the on state. Since the start of operation is controlled from the same state as that held in the storage unit, the operation of each branch output means can be automatically started from the state before the DC power is turned off. The setting can be omitted and efficiency can be improved.

さらに、この発明に係る回路保護装置の短絡電流遮断方法は、電源装置を接続し、電源装置の直流電源出力を複数の負荷に分岐して供給する回路保護装置の短絡電流遮断方法であって、短絡時の過大電流を検出するステップS1と、瞬時遮断を動作させ、遮断部を一時遮断するステップS2と、定電流を流すステップS3と、定電流を検出するステップS4と、定電流が所定時間を超えたか否かを判定するステップS5と、所定時間を超えた場合には、状態情報を送信するステップS6と、遮断指令を受けて定電流部および遮断部を完全に遮断するステップS7とを備えたので、負荷短絡が発生しても、過大な短絡電流を流さずに、定電流で抑制して、所定時間経過後に定電流を遮断することができ、装置を過電流から保護するとともに、他の負荷動作に及ぼす影響を無くすることができる。   Furthermore, the short circuit current interruption method of the circuit protection device according to the present invention is a short circuit current interruption method of the circuit protection device that connects the power supply device and branches and supplies the DC power supply output of the power supply device to a plurality of loads. Step S1 for detecting an excessive current at the time of a short circuit, Step S2 for operating an instantaneous interruption and temporarily interrupting the interruption part, Step S3 for supplying a constant current, Step S4 for detecting a constant current, and a constant current for a predetermined time Step S5 for determining whether or not the predetermined time has been exceeded, Step S6 for transmitting the state information when the predetermined time is exceeded, and Step S7 for completely shutting off the constant current portion and the cutoff portion in response to the cutoff command. Because it is equipped, even if a load short circuit occurs, it can be suppressed with a constant current without flowing an excessive short circuit current, and the constant current can be cut off after a predetermined time, protecting the device from overcurrent, other It is possible to eliminate the influence on the load behavior.

以下、この発明の実施の形態を添付図面に基づいて説明する。なお、本実施の形態では、4個の負荷に分岐された直流電源VDCを供給する場合について説明する、図1はこの発明に係る回路保護装置の実施の形態全体構成図である。図1において、回路保護装置1は、分岐/制御手段2と、直流電源20の直流電源VDCが接続される入力端子I1,I2と、直流電源20から供給される直流電源VDCを4分岐して、出力端子A1,B1〜A4,B4から負荷L1〜L4に供給する分岐出力手段3から構成されている。   Embodiments of the present invention will be described below with reference to the accompanying drawings. In the present embodiment, a case where a DC power supply VDC branched to four loads is supplied will be described. FIG. 1 is an overall configuration diagram of an embodiment of a circuit protection device according to the present invention. In FIG. 1, the circuit protection device 1 has four branches: a branch / control unit 2, input terminals I 1 and I 2 to which a DC power source VDC of a DC power source 20 is connected, and a DC power source VDC supplied from the DC power source 20. The branch output means 3 supplies the loads L1 to L4 from the output terminals A1, B1 to A4 and B4.

分岐出力手段3は、複数の分岐出力手段3a、分岐出力手段3b、分岐出力手段3cおよび分岐出力手段3dから構成され、それぞれ各種内部電源ライン、各種データラインを内蔵する接続ラインl1〜l4を介して分岐/制御手段2と接続されている。   The branch output means 3 is composed of a plurality of branch output means 3a, branch output means 3b, branch output means 3c and branch output means 3d, via connection lines 11 to 14 each incorporating various internal power supply lines and various data lines. Are connected to the branch / control means 2.

分岐出力手段3a〜3dは、それぞれ出力端子A1,B1〜A4,B4を介して負荷L1〜L4に分岐された直流電源VDCおよび定常負荷電流IL1〜IL4を供給する。なお、定常負荷電流IL1〜IL4は、負荷L1〜L4が抵抗負荷で、短絡していない場合を示すが、負荷L1〜L4は、容量性負荷で突入電流が流れるケースおよび負荷短絡で短絡電流が流れるケースを想定する。   Branch output means 3a-3d supply DC power supply VDC and steady load currents IL1-IL4 branched to loads L1-L4 via output terminals A1, B1-A4, B4, respectively. The steady load currents IL1 to IL4 indicate cases where the loads L1 to L4 are resistive loads and are not short-circuited. However, the loads L1 to L4 have a short-circuit current due to a case where an inrush current flows in a capacitive load and a load short-circuit. Assume a flowing case.

分岐/制御手段2は、直流電源出力VDCを負荷対応(負荷L1〜L4)の分岐出力手段3(分岐出力手段3a〜3d)に分岐して供給するとともに、各分岐出力手段(分岐出力手段3a〜3d)の状況を監視し、状況に応じた制御を実行する。   The branch / control unit 2 supplies the DC power supply output VDC to the branch output unit 3 (branch output units 3a to 3d) corresponding to the load (loads L1 to L4) and supplies each branch output unit (branch output unit 3a). -3d) is monitored and control corresponding to the situation is executed.

分岐出力手段3(分岐出力手段3a〜3d)は、突入電流や短絡電流を定電流で抑制し、定電流が所定時間を超える場合には、状態情報を分岐/制御手段2に提供し、分岐/制御手段2から提供される遮断指令によって負荷L1〜L4への電流を遮断する。   The branch output means 3 (branch output means 3a to 3d) suppresses the inrush current and the short-circuit current with a constant current, and provides the state information to the branch / control means 2 when the constant current exceeds a predetermined time. / The current to the loads L1 to L4 is interrupted by the interruption command provided from the control means 2.

図2はこの発明に係る分岐/制御手段の一実施の形態要部ブロック構成図である。図2において、分岐/制御手段2は、制御部4、記憶部5、リセット部6,遮断トリガ入力部7、外部通信部8、内部電源部9、アラーム出力部10および表示部11を備える。   FIG. 2 is a block diagram showing the principal part of one embodiment of the branch / control means according to the present invention. In FIG. 2, the branch / control means 2 includes a control unit 4, a storage unit 5, a reset unit 6, a cutoff trigger input unit 7, an external communication unit 8, an internal power supply unit 9, an alarm output unit 10, and a display unit 11.

制御部4は、マイクロプロセッサやDSP(Digital Signal Processor)などを基本に構成し、アクセス機能、比較機能、判定機能、表示駆動機能、キーインタフェース機能等を備える。   The control unit 4 basically includes a microprocessor, a DSP (Digital Signal Processor), and the like, and includes an access function, a comparison function, a determination function, a display drive function, a key interface function, and the like.

制御部4は、装置全体の動作を制御し、起動すると、駆動指令DONを分岐出力手段3a〜3dに提供し、分岐出力手段3a〜3dを起動する制御を実行する。   When the control unit 4 controls the operation of the entire apparatus and starts up, the control unit 4 supplies the drive command DON to the branch output units 3a to 3d, and executes control to start the branch output units 3a to 3d.

また、制御部4は、分岐出力手段3a〜3dからデータラインを介して提供される状態情報JSを監視し、状態情報JSを記憶部5に記憶するとともに、状態情報JSに対応した表示データDGを表示部11に提供し、分岐出力手段3a〜3dの状態表示させる制御を実行する。   The control unit 4 monitors the status information JS provided from the branch output means 3a to 3d via the data line, stores the status information JS in the storage unit 5, and displays the display data DG corresponding to the status information JS. Is displayed on the display unit 11, and control for displaying the status of the branch output means 3a to 3d is executed.

さらに、制御部4は、状態情報JSが遮断要求の場合には、データラインを介して遮断指令DOFFを分岐出力手段3a〜3dに提供し、分岐出力手段3a〜3dを遮断する制御を実行する。   Further, when the status information JS is a cutoff request, the control unit 4 provides a cutoff command DOFF to the branch output means 3a to 3d via the data line, and executes control to shut off the branch output means 3a to 3d. .

また、制御部4は、直流電源20のスイッチSWがOFFされた場合、その時点の分岐出力手段3a〜3dの状態(状態情報JS)を記憶部5に保持させ、直流電源20のスイッチSWがONされた場合には、記憶部5に記憶させてある状態に基づいて駆動指令DONならびに遮断指令DOFFを分岐出力手段3a〜3dに供給し、分岐出力手段3a〜3dを直流電源20のスイッチSWがOFF前と同じ状態から動作を開始させる制御を実行する。   Further, when the switch SW of the DC power supply 20 is turned OFF, the control unit 4 holds the state (state information JS) of the branch output means 3a to 3d at that time in the storage unit 5, and the switch SW of the DC power supply 20 is When turned ON, the drive command DON and the cutoff command DOFF are supplied to the branch output means 3a to 3d based on the state stored in the storage unit 5, and the branch output means 3a to 3d are switched to the switch SW of the DC power source 20. Control to start the operation from the same state as before is turned off.

さらに、制御部4は、遮断指令DOFFを出力するタイミングでアラーム情報JAをアラーム出力部10に供給し、分岐出力手段3a〜3dの遮断をアラーム音などで通知する制御を実行する。   Further, the control unit 4 supplies the alarm information JA to the alarm output unit 10 at the timing of outputting the cutoff command DOFF, and executes control for notifying the cutoff of the branch output means 3a to 3d with an alarm sound or the like.

また、制御部4は、リセット部6からリセット情報JTが提供されると、該当する分岐出力手段3(分岐出力手段3a〜分岐出力手段3dのいずれか)に駆動指令DONを提供し、該当する分岐出力手段3(例えば、分岐出力手段3a)を起動させる制御を実行する。   Further, when the reset information JT is provided from the reset unit 6, the control unit 4 provides the drive command DON to the corresponding branch output unit 3 (any one of the branch output unit 3a to the branch output unit 3d), and the corresponding. Control for starting the branch output means 3 (for example, the branch output means 3a) is executed.

さらに、制御部4は、遮断トリガ入力部7から遮断トリガ情報JGが提供されると、遮断指令DOFFを分岐出力手段3(分岐出力手段3a〜3d)に提供し、分岐出力手段3を強制的に遮断する制御を実行する。   Further, when the cutoff trigger information JG is provided from the cutoff trigger input unit 7, the control unit 4 provides the cutoff command DOFF to the branch output means 3 (branch output means 3a to 3d), and the branch output means 3 is forced. Execute the control to shut off.

また、制御部4は、一定時間間隔で記憶部5に記憶されている分岐出力手段3(分岐出力手段3a〜3d)の状態を外部通信部8から外部機器(例えば、パーソナルコンピュータ)に送信させる制御を実行する。   In addition, the control unit 4 causes the external communication unit 8 to transmit the state of the branch output unit 3 (branch output units 3a to 3d) stored in the storage unit 5 at regular time intervals to an external device (for example, a personal computer). Execute control.

記憶部5は、EEPROM、フラッシュメモリなどの書換え可能なメモリで構成し、分岐出力手段3(分岐出力手段3a〜3d)に対応した記憶領域を備え、制御部4から提供される分岐出力手段3a〜3d毎の状態情報JSを記憶し、記憶した状態情報JSを制御部4に提供する。   The storage unit 5 includes a rewritable memory such as an EEPROM or a flash memory, has a storage area corresponding to the branch output unit 3 (branch output units 3a to 3d), and includes a branch output unit 3a provided from the control unit 4 The state information JS for every 3d is stored, and the stored state information JS is provided to the control unit 4.

また、記憶部5は、直流電源20のスイッチSWがON状態からOFF状態になる直前の各分岐出力手段3a〜3dの状態情報JSを保持し、直流電源20のスイッチSWがONされた場合、保持してある状態情報JSを制御部4に提供して、各分岐出力手段3a〜3dの動作を同じ状態から開始させる。   Further, the storage unit 5 holds the state information JS of each branch output means 3a to 3d immediately before the switch SW of the DC power supply 20 is turned off from the ON state, and when the switch SW of the DC power supply 20 is turned on, The held state information JS is provided to the control unit 4, and the operations of the branch output units 3a to 3d are started from the same state.

内部電源部9は、直流電源VDCから分岐/制御手段2または分岐出力手段3a〜3dで使用する内部電源を発生し、発生した内部電源を分岐/制御手段2内の各部または内部電源ラインを介して分岐出力手段3a〜3dに供給する。   The internal power supply unit 9 generates an internal power source to be used by the branch / control unit 2 or the branch output units 3a to 3d from the DC power source VDC, and the generated internal power source is passed through each unit in the branch / control unit 2 or an internal power line. To the branch output means 3a to 3d.

このように、この発明に係る分岐/制御手段2は、装置全体の動作を制御する制御部4と、状態情報JSに基づいて各分岐出力手段(3a〜3d)の状態を記憶する記憶部5、各分岐出力手段(3a〜3d)に指令を発生するリセット部6と、各分岐出力手段(3a〜3d)を強制的に遮断する遮断トリガを入力する遮断トリガ入力部7と、外部機器に各分岐出力手段(3a〜3d)の状態情報JSを送信する外部通信部8、装置に必要とされる各種電源を供給する内部電源部9、各分岐出力手段(3a〜3d)の遮断を通知するアラーム出力部10、各分岐出力手段(3a〜3d)の動作または遮断を表示する表示部11とを備えたので、直流電源VDCを分岐した複数の分岐出力手段(3a〜3d)の状態を監視するとともに、短絡負荷が発生した分岐出力手段(3a〜3d)を自動的または強制的に遮断することができ、利便性の向上を図ることができる。   As described above, the branch / control unit 2 according to the present invention includes the control unit 4 that controls the operation of the entire apparatus, and the storage unit 5 that stores the states of the branch output units (3a to 3d) based on the state information JS. , A reset unit 6 for generating a command to each branch output means (3a to 3d), a cutoff trigger input unit 7 for inputting a cutoff trigger for forcibly blocking each branch output means (3a to 3d), and an external device Notification of external communication unit 8 that transmits status information JS of each branch output means (3a to 3d), internal power supply unit 9 that supplies various power sources required for the apparatus, and shutoff of each branch output means (3a to 3d) Alarm display unit 10 and display unit 11 for displaying the operation or shutoff of each branch output means (3a to 3d), so that the state of a plurality of branch output means (3a to 3d) branching DC power supply VDC Monitoring and short circuit load occurs The branch output means (3a to 3d) can be shut off automatically or forcibly, and the convenience can be improved.

また、この発明に係る制御部4は、直流電源VDCがオン状態からオフ状態になる直前の各分岐出力手段(3a〜3d)の状態を記憶部5に保持し、直流電源VDCがオフ状態からオン状態になった時、記憶部5に保持された状態と同じ状態から動作の開始を制御するので、各分岐出力手段の動作を自動的に直流電源を切る前の状態から開始することができ、各分岐出力手段の設定を省き、効率化を図ることができる。   Further, the control unit 4 according to the present invention holds the state of each branch output means (3a to 3d) immediately before the DC power source VDC is turned off from the on state in the storage unit 5, so that the DC power source VDC is turned off. Since the start of operation is controlled from the same state as the state held in the storage unit 5 when the on state is entered, the operation of each branch output means can be automatically started from the state before the DC power is turned off. Therefore, the setting of each branch output means can be omitted and efficiency can be improved.

図3はこの発明に係る分岐出力手段の一実施の要部形態ブロック構成図である。なお、分岐出力手段3a〜3dは、同一構成ならびに同一機能なので、分岐出力手段3aについて説明する。   FIG. 3 is a block diagram of the main part of one embodiment of the branch output means according to the present invention. Since the branch output means 3a to 3d have the same configuration and the same function, the branch output means 3a will be described.

図3において、分岐出力手段3aは、定電流部12、遮断部13、瞬時遮断部14、電流検出部15および動作/遮断駆動部16を備える。   In FIG. 3, the branch output means 3 a includes a constant current unit 12, a cutoff unit 13, an instantaneous cutoff unit 14, a current detection unit 15, and an operation / cutoff drive unit 16.

定電流部12は、容量性負荷の突入電流や短絡負荷の短絡電流を定電流IKで抑制し、定電流IKを電流検出部15に供給する。   The constant current unit 12 suppresses the inrush current of the capacitive load and the short circuit current of the short circuit load with the constant current IK, and supplies the constant current IK to the current detection unit 15.

遮断部13は、定常負荷電流ILを流し、定常負荷電流ILを電流検出部15に供給する。また、遮断部13は、電流検出部15で過大電流を検出した場合、電流検出部15から供給される遮断信号SDまたは瞬時遮断部14から供給される信号に基づいて電流経路を一時遮断する。   The interruption unit 13 flows the steady load current IL and supplies the steady load current IL to the current detection unit 15. Further, when the current detector 15 detects an excessive current, the interrupter 13 temporarily interrupts the current path based on the interrupt signal SD supplied from the current detector 15 or the signal supplied from the instantaneous interrupter 14.

瞬時遮断部14は、過大電流に対して瞬時に反応し、電流検出部15から供給される遮断信号SDに基づいて、信号を遮断部13に供給し、遮断信号SDによる遮断部13の遮断よりも早く遮断部13を瞬時に遮断する。   The instantaneous interruption unit 14 reacts instantaneously to an excessive current, supplies a signal to the interruption unit 13 based on the interruption signal SD supplied from the current detection unit 15, and from the interruption of the interruption unit 13 by the interruption signal SD. As soon as possible, the shut-off part 13 is shut off instantaneously.

電流検出部15は、遮断部13から供給される定常負荷電流ILや定電流部12から供給される定電流IKを検出し、遮断信号SDを遮断部13および瞬時遮断部14に供給するとともに、検出した電流値に対応した状態情報JSを分岐/制御手段2に送信する。   The current detection unit 15 detects the steady load current IL supplied from the cutoff unit 13 and the constant current IK supplied from the constant current unit 12, and supplies the cutoff signal SD to the cutoff unit 13 and the instantaneous cutoff unit 14. The state information JS corresponding to the detected current value is transmitted to the branch / control unit 2.

動作/遮断駆動部16は、分岐/制御手段2から提供される駆動指令DONまたは遮断指令DOFFに基づいて定電流部12および遮断部13を起動したり、遮断したりする。   The operation / cut-off drive unit 16 activates or shuts off the constant current unit 12 and the cut-off unit 13 based on the drive command DON or the cut-off command DOFF provided from the branch / control unit 2.

分岐出力手段3aを起動する場合、駆動指令DONに対応した信号を定電流部12および遮断部13に提供することにより実行される。   When the branch output means 3a is started, it is executed by providing a signal corresponding to the drive command DON to the constant current unit 12 and the cutoff unit 13.

一方、分岐出力手段3aを遮断する場合には、遮断指令DOFFに対応した信号を定電流部12および遮断部13に提供することにより実行される。   On the other hand, when the branch output means 3a is shut off, it is executed by providing a signal corresponding to the shutoff command DOFF to the constant current unit 12 and the shutoff unit 13.

図4はこの発明に係る電流検出部の一実施の形態要部ブロック構成図である。図4において、電流検出部15は、電流を電圧で検出する電流検出用抵抗器RD、電流検出用抵抗器RDが検出した電流値を検知する電流値検知部17、電流値検知部17で検知した電流が定電流IKの場合、定電流IKの継続時間をカウントするタイマ19、検知した電流値を状態情報JSとして分岐/制御手段2に送信する送信部18を備える。   FIG. 4 is a block diagram of a main part of an embodiment of the current detection unit according to the present invention. In FIG. 4, the current detection unit 15 is detected by a current detection resistor RD that detects a current with a voltage, a current value detection unit 17 that detects a current value detected by the current detection resistor RD, and a current value detection unit 17. When the measured current is a constant current IK, a timer 19 that counts the duration of the constant current IK and a transmission unit 18 that transmits the detected current value to the branch / control unit 2 as state information JS are provided.

なお、電流値検知部17は、電流検出用抵抗器RDで過大電流を検出すると、遮断信号SDを遮断部13および瞬時遮断部14に供給する。   The current value detection unit 17 supplies a cutoff signal SD to the cutoff unit 13 and the instantaneous cutoff unit 14 when an excessive current is detected by the current detection resistor RD.

また、電流値検知部17は、電流検出用抵抗器RDで検出した電流が0値の場合、負荷が接続されていないと判断し、0値の電流信号I0を送信部18を介して状態情報JSとして分岐/制御手段2に送信する。   Further, when the current detected by the current detection resistor RD is 0 value, the current value detection unit 17 determines that the load is not connected, and transmits the 0 value current signal I0 via the transmission unit 18 as status information. It is transmitted to the branch / control means 2 as JS.

さらに、電流値検知部17は、電流検出用抵抗器RDで定常負荷電流ILを検出した場合、負荷が正常に動作していると判断し、定常負荷電流ILを送信部18を介して状態情報JSとして分岐/制御手段2に送信する。   Further, when the current value detection unit 17 detects the steady load current IL with the current detection resistor RD, the current value detection unit 17 determines that the load is operating normally, and sends the steady load current IL to the state information via the transmission unit 18. It is transmitted to the branch / control means 2 as JS.

また、電流値検知部17は、電流検出用抵抗器RDで定電流IKを検出した場合、負荷が容量性負荷または短絡していると判断し、定電流IKの継続時間をタイマ19で計時し、継続時間が所定時間TKを超える場合には、負荷短絡として定電流IKを送信部18を介して状態情報JSとして分岐/制御手段2に送信する。   Further, when the current value detection unit 17 detects the constant current IK with the current detection resistor RD, the current value detection unit 17 determines that the load is a capacitive load or a short circuit, and measures the duration of the constant current IK with the timer 19. If the duration exceeds the predetermined time TK, a constant current IK is transmitted to the branch / control means 2 as state information JS via the transmitter 18 as a load short circuit.

一方、定電流IKの継続時間が所定時間TK未満の場合には、容量性負荷として電流値情報を分岐/制御手段2に送信しない。   On the other hand, when the duration of the constant current IK is less than the predetermined time TK, current value information is not transmitted to the branch / control unit 2 as a capacitive load.

なお、タイマ19の所定時間TKを変更することにより、負荷短絡時の定電流IKの継続時間を自由に設定することができる。   In addition, by changing the predetermined time TK of the timer 19, the duration of the constant current IK when the load is short-circuited can be freely set.

このように、この発明に係る電流検出部15は、電流値を検知する電流値検知部17と、定電流IKの所定時間TKを計時するタイマ19と、電流値検知部17が検知した電流値に基づき、またはタイマ19が所定時間TKを越えて定電流IKを計時した場合に、状態情報JSを分岐/制御手段2に送信する送信部18とを備えたので、分岐出力手段3aの状態を分岐/制御手段2に通知することができ、分岐/制御手段2に分岐出力手段3aの状態を表示し、分岐出力手段3aの電流(定電流IK)を遮断することができる。   Thus, the current detection unit 15 according to the present invention includes the current value detection unit 17 that detects the current value, the timer 19 that measures the predetermined time TK of the constant current IK, and the current value detected by the current value detection unit 17. Or the transmission unit 18 that transmits the state information JS to the branching / control unit 2 when the timer 19 counts the constant current IK beyond the predetermined time TK, so that the state of the branch output unit 3a is changed. The branch / control unit 2 can be notified, the state of the branch output unit 3a can be displayed on the branch / control unit 2, and the current (constant current IK) of the branch output unit 3a can be cut off.

また、この発明に係るタイマ19は、所定時間TKを変更可能なので、突入電流や短絡電流を抑制する定電流IKを不必要に長い時間流さないようにすることができ、分岐出力手段3aの遮断を最適に設定することができる。   Further, since the timer 19 according to the present invention can change the predetermined time TK, the constant current IK for suppressing the inrush current and the short-circuit current can be prevented from flowing for an unnecessarily long time, and the branch output means 3a is interrupted. Can be set optimally.

図5はこの発明に係る分岐出力手段の一実施の形態要部回路構成図である。図5において、分岐出力手段3aは、定電流部12を構成する定電流回路12a、遮断部13を構成する遮断回路13a、瞬時遮断部14を構成する瞬時遮断回路14a、動作/遮断駆動部16を構成する動作/遮断用トランジスタTRaおよび動作/遮断用トランジスタTRbを備える。   FIG. 5 is a circuit diagram showing the principal part of one embodiment of the branch output means according to the present invention. In FIG. 5, the branch output means 3 a includes a constant current circuit 12 a that constitutes the constant current unit 12, a cutoff circuit 13 a that constitutes the cutoff unit 13, an instantaneous cutoff circuit 14 a that constitutes the instantaneous cutoff unit 14, and an operation / cutoff drive unit 16. Is provided with an operation / cutoff transistor TRa and an operation / cutoff transistor TRb.

動作/遮断用トランジスタTRaおよび動作/遮断用トランジスタTRbは、分岐/制御手段2から提供される駆動指令DONに基づいて定電流回路12aおよび瞬時遮断回路14aをオン駆動する。   The operation / cutoff transistor TRa and the operation / cutoff transistor TRb drive the constant current circuit 12a and the instantaneous cut-off circuit 14a on based on the drive command DON provided from the branch / control means 2.

また、動作/遮断用トランジスタTRaおよび動作/遮断用トランジスタTRbは、分岐/制御手段2から提供される遮断指令DOFFに基づいて定電流回路12aおよび瞬時遮断回路14aをオフ駆動し、分岐出力手段3aを遮断する。   Further, the operation / cutoff transistor TRa and the operation / cutoff transistor TRb drive off the constant current circuit 12a and the instantaneous cut-off circuit 14a based on the cut-off command DOFF provided from the branch / control means 2, and the branch output means 3a. Shut off.

このように、この発明に係る分岐出力手段3aは、分岐/制御手段2から提供される指令に基づいて定電流部12および遮断部13の動作/遮断を駆動する動作/遮断駆動部16(動作/遮断用トランジスタTRa、TRb)を備えたので、分岐/制御手段2から動作指令(駆動指令DON)や遮断指令(遮断指令DOFF)を提供するだけで、分岐出力手段3aの動作や遮断を容易に実行することができ、使い勝手の良さをアピールすることができる。   As described above, the branch output unit 3a according to the present invention is configured to operate / cut off drive unit 16 (operating for driving the constant current unit 12 and the cut off unit 13 based on the command provided from the branch / control unit 2). / Transistors TRa, TRb) are provided, so that the branch output means 3a can be easily operated and shut off simply by providing an operation command (drive command DON) and a shutoff command (cutoff command DOFF) from the branch / control means 2. It can be executed easily, and it can appeal the ease of use.

定電流回路12aは、MOSFET−Q1、ツェナーダイオードZD、定電流用抵抗器RXを備え、ツェナーダイオードZDのツェナー電圧および定電流用抵抗器RXで決定される定電流IKを流す。   The constant current circuit 12a includes a MOSFET-Q1, a Zener diode ZD, and a constant current resistor RX, and allows a constant current IK determined by the Zener voltage of the Zener diode ZD and the constant current resistor RX to flow.

定電流回路12a(定電流部12)は、定電流用抵抗器RXまたはツェナーダイオードZDを調節することにより、定電流IKを自由に設定することができる。   The constant current circuit 12a (constant current unit 12) can freely set the constant current IK by adjusting the constant current resistor RX or the Zener diode ZD.

このように、この発明に係る定電流部12(定電流回路12a)は、定電流IKを変更可能なので、直流電源20の電流容量や分岐出力手段3aの遮断要求に応じて定電流IKを任意に変更することができ、フレキシビリティ性を実現することができる。   Thus, since the constant current unit 12 (constant current circuit 12a) according to the present invention can change the constant current IK, the constant current IK can be arbitrarily set according to the current capacity of the DC power supply 20 and the cutoff request of the branch output means 3a. The flexibility can be realized.

遮断回路13aは、MOSFET−Q2、差動増幅器OP1、コンパレータOP2、トランジスタTR1、フィルタなどで構成し、動作/遮断用トランジスタTRaと動作/遮断用トランジスタTRbが同時にオン駆動されても、フィルタによってMOSFET−Q2のオンが定電流回路12aのオンよりも遅れるため、容量性負荷の立ち上りや短絡負荷の立ち上りには、定電流回路12aが先に動作して定電流IKを流す。   The cutoff circuit 13a is composed of a MOSFET-Q2, a differential amplifier OP1, a comparator OP2, a transistor TR1, a filter and the like. Even if the operation / cutoff transistor TRa and the operation / cutoff transistor TRb are simultaneously turned on, the MOSFET is turned on by the filter. Since -Q2 is turned on later than the constant current circuit 12a is turned on, the constant current circuit 12a operates first to flow the constant current IK when the capacitive load rises or the short-circuit load rises.

また、遮断回路13aは、定電流IKが流れると、電流検出用抵抗器RDで検出され、差動増幅器OP1、コンパレータOP2を介してトランジスタTR1をオフ状態にするため、MOSFET−Q2はオフ状態を継続し、遮断状態を継続する。   Further, when a constant current IK flows, the cutoff circuit 13a is detected by a current detection resistor RD, and the transistor TR1 is turned off via the differential amplifier OP1 and the comparator OP2, so that the MOSFET-Q2 is turned off. Continue and continue shut off.

さらに、遮断回路13aは、容量性負荷が定電流IKで充電され、定電流IKが減少してくると、差動増幅器OP1、コンパレータOP2を介してトランジスタTR1をオン状態にするため、MOSFET−Q2がオン状態になり、容量性負荷に定常負荷電流ILを流す。なお、MOSFET−Q2がオン状態になると、定電流回路12aの動作が停止する。   Further, the cutoff circuit 13a turns on the transistor TR1 via the differential amplifier OP1 and the comparator OP2 when the capacitive load is charged with the constant current IK and the constant current IK decreases. Is turned on, and a steady load current IL flows through the capacitive load. When the MOSFET-Q2 is turned on, the operation of the constant current circuit 12a is stopped.

定常負荷電流ILが流れている状態から、負荷短絡の状態に移行すると、過大電流IPが遮断回路13aのMOSFET−Q2を流れ、電流検出用抵抗器RDで過大電流が検出されると、差動増幅器OP1、コンパレータOP2を介してトランジスタTR1がオフ状態になるが、フィルタにより遅延が発生する。   When a transition is made from the state where the steady load current IL is flowing to the state where the load is short-circuited, the excessive current IP flows through the MOSFET-Q2 of the cutoff circuit 13a, and when the excessive current is detected by the current detection resistor RD, The transistor TR1 is turned off via the amplifier OP1 and the comparator OP2, but a delay is generated by the filter.

フィルタの遅延によるMOSFET−Q2のオフの遅れをカバーするため、電流検出用抵抗器RDで過大電流が検出されると同時に、瞬時遮断回路14aのトランジスタTR2がオン状態になり、MOSFET−Q2の動作を停止する。なお、過大電流の発生から瞬時遮断回路14aが動作するまでの時間は、数μsにすることができる。   In order to cover the delay of turning off the MOSFET-Q2 due to the delay of the filter, the transistor TR2 of the instantaneous cutoff circuit 14a is turned on simultaneously with the detection of the excessive current by the current detection resistor RD, and the operation of the MOSFET-Q2 To stop. Note that the time from the generation of an excessive current to the operation of the instantaneous interruption circuit 14a can be set to several μs.

遮断回路13aのMOSFET−Q2がオフ状態になると、定電流回路12aが動作を開始し、短絡電流ISを定電流IKに抑制して分岐出力手段3aおよび分岐/制御手段2を短絡電流ISから保護することになる。   When the MOSFET Q2 of the cutoff circuit 13a is turned off, the constant current circuit 12a starts to operate, and the short circuit current IS is suppressed to the constant current IK to protect the branch output means 3a and the branch / control means 2 from the short circuit current IS. Will do.

このように、この発明に係る電流検出部15は、過大電流を検出した場合、遮断部13に遮断信号SDを供給して遮断部13を遮断するので、定電流部12を起動して定電流IKを流すことができ、突入電流や短絡電流を定電流に抑制し、分岐出力手段3aならびに分岐/制御手段2を保護することができる。   As described above, when the current detection unit 15 according to the present invention detects an excessive current, the current detection unit 15 supplies the cutoff signal SD to the cutoff unit 13 to shut off the cutoff unit 13. Therefore, the constant current unit 12 is activated to IK can be flown, the inrush current and the short-circuit current can be suppressed to a constant current, and the branch output means 3a and the branch / control means 2 can be protected.

また、この発明に係る瞬時遮断部14(瞬時遮断回路14a)は、過大電流を瞬時に検出し、遮断部13を瞬時に遮断するので、遮断部13の一時遮断動作を迅速に実行して、定電流動作に移行することができ、不必要な過大電流から分岐出力手段3aを保護することができる。   Moreover, since the instantaneous interruption part 14 (instantaneous interruption circuit 14a) which concerns on this invention detects an excessive current instantaneously and interrupts | blocks the interruption | blocking part 13 instantaneously, the temporary interruption | blocking operation | movement of the interruption | blocking part 13 is performed rapidly, The operation can be shifted to a constant current operation, and the branch output means 3a can be protected from an unnecessary excessive current.

次に、分岐出力手段3aを流れる負荷電流Iについて説明する。なお、図5を参照にして説明する。また、定電流IKを太実線表示、定常負荷電流ILを細実線表示、定電流IKと定常負荷電流ILの和を破線表示、過大電流IPを一点鎖線表示で示す。図6はこの発明に係る抵抗負荷に流れる電流の一実施の形態動作シーケンス図である。図6において、分岐出力手段3aが動作を開始すると、定電流回路12aが先に立ち上がるが、定常負荷電流ILが流れるため、遅れて立ち上がる遮断部13のMOSFET−Q2のオンによって、定電流IKがわずかの時間だけ小さい電流値で立ち上がり、直ぐに立ち下がる。遅れて立ち上がった遮断回路13aは、負荷に定常負荷電流ILを流す。   Next, the load current I flowing through the branch output means 3a will be described. This will be described with reference to FIG. Further, the constant current IK is indicated by a bold solid line, the steady load current IL is indicated by a thin solid line, the sum of the constant current IK and the steady load current IL is indicated by a broken line, and the excessive current IP is indicated by a one-dot chain line. FIG. 6 is an operation sequence diagram of an embodiment of a current flowing through a resistance load according to the present invention. In FIG. 6, when the branch output means 3a starts operating, the constant current circuit 12a rises first. However, since the steady load current IL flows, the constant current IK is reduced by turning on the MOSFET-Q2 of the interrupting portion 13 that rises late. It rises with a small current value for a short time and falls immediately. The interruption circuit 13a that has started up with a delay causes a steady load current IL to flow through the load.

図7はこの発明に係る容量性負荷に流れる電流の一実施の形態動作シーケンス図である。図7において、分岐出力手段3aが動作を開始すると、定電流回路12aが先に立ち上り、容量性負荷に流れる電流が多いため(定電流回路12aがないと、突入電流IRが流れる)、定電流IKに到達し、定電流IKが流れ続ける。   FIG. 7 is an operation sequence diagram of an embodiment of a current flowing through a capacitive load according to the present invention. In FIG. 7, when the branch output means 3a starts operation, the constant current circuit 12a rises first, and a large amount of current flows through the capacitive load (the inrush current IR flows without the constant current circuit 12a). IK is reached and constant current IK continues to flow.

容量性負荷に定電流IKで充電すると、時間経過に伴い容量性負荷端の電圧が上昇し、定電流IKが減少を始めると、遮断部13が動作してMOSFET−Q2に流れる電流(負荷電流ILの始め)が次第に増加し、定電流IKが0値になる時点で、容量性負荷の定常負荷電流ILとなる。従って、容量性負荷であっても、定電流IK→定常負荷電流ILと継続し、分岐出力手段3aが遮断することがない。   When the capacitive load is charged with the constant current IK, the voltage at the capacitive load end increases with the passage of time, and when the constant current IK starts to decrease, the interrupting unit 13 operates and the current flowing through the MOSFET-Q2 (load current) When the constant current IK becomes zero, the steady load current IL of the capacitive load is reached. Therefore, even if it is a capacitive load, the constant current IK → the steady load current IL is continued and the branch output means 3a is not interrupted.

図8はこの発明に係る定常負荷から短絡負荷になる場合に流れる電流の一実施の形態動作シーケンス図である。図8において、遮断回路13aのMOSFET−Q2がオン状態にあり、定常負荷電流ILがMOSFET−Q2を介して流れている状態から、負荷が短絡(途中短絡)すると、過大電流IPがMOSFET−Q2を介して流れ、電流検出用抵抗器RDにより検出される。   FIG. 8 is an operation sequence diagram of an embodiment of a current that flows when a steady load is changed to a short-circuit load according to the present invention. In FIG. 8, when the load is short-circuited (short-circuited shortly) from the state in which the MOSFET-Q2 of the cutoff circuit 13a is in the on state and the steady load current IL flows through the MOSFET-Q2, the excessive current IP is increased to the MOSFET-Q2. And is detected by a current detection resistor RD.

過大電流IPの検出によって、瞬時遮断回路14aが瞬時にMOSFET−Q2をオフ状態にすると、定電流回路12aが動作を開始し、過大電流IPを抑制して定電流IKを流す。定電流IKが所定時間TKを超えて継続すると、分岐/制御手段2から提供される遮断指令DOFFに基づいて動作/遮断用トランジスタTRaおよび動作/遮断用トランジスタTRbがオフ動作をし、定電流回路12aおよび遮断回路13aを遮断することで、分岐出力手段3aを遮断する。   When the instantaneous cut-off circuit 14a instantaneously turns off the MOSFET-Q2 due to detection of the excessive current IP, the constant current circuit 12a starts operating, and suppresses the excessive current IP to flow the constant current IK. When the constant current IK continues beyond the predetermined time TK, the operation / cutoff transistor TRa and the operation / cutoff transistor TRb are turned off based on the cut-off command DOFF provided from the branch / control means 2, and the constant current circuit The branch output means 3a is shut off by shutting off 12a and the shutoff circuit 13a.

図9はこの発明に係る負荷の初期短絡に流れる電流の一実施の形態動作シーケンス図である。図9において、分岐出力手段3aの動作開始時に負荷が短絡しているので、定電流回路12aが先に立ち上り、定電流IKを流す。定電流IKが所定時間TKを超えて継続すると、分岐/制御手段2から提供される遮断指令DOFFに基づいて動作/遮断用トランジスタTRaおよび動作/遮断用トランジスタTRbがオフ動作をし、定電流回路12aおよび遮断回路13aを遮断することで、分岐出力手段3aを遮断する。   FIG. 9 is an operation sequence diagram of an embodiment of a current flowing in an initial short circuit of a load according to the present invention. In FIG. 9, since the load is short-circuited at the start of the operation of the branch output means 3a, the constant current circuit 12a rises first and supplies a constant current IK. When the constant current IK continues beyond the predetermined time TK, the operation / cutoff transistor TRa and the operation / cutoff transistor TRb are turned off based on the cut-off command DOFF provided from the branch / control means 2, and the constant current circuit The branch output means 3a is shut off by shutting off 12a and the shutoff circuit 13a.

このように、この発明に係る分岐出力手段3aは、突入電流や短絡電流を定電流IKで抑制する定電流部12、電流を遮断する遮断部13、過大電流IPに対して瞬時に反応する瞬時遮断部14、電流を検出する電流検出部15を備えたので、負荷に流れる電流を検出し、検出した電流値に基づいて突入電流や短絡電流に対応した定電流IKを流し、または定電流IKを流すとともに、定電流IKが所定時間TKを経過すると、状態情報JS(遮断要求)を分岐/制御手段2に送信し、分岐/制御手段2からの遮断指令(遮断指令DOFF)に基づいて定電流IKを遮断することができ、定電流IKを流すことと、定電流IKを所定時間TK監視するという単純な構成で、短絡負荷を遮断することができる。   As described above, the branch output means 3a according to the present invention includes the constant current portion 12 that suppresses the inrush current and the short-circuit current with the constant current IK, the interruption portion 13 that interrupts the current, and the instantaneous response that reacts instantaneously to the excessive current IP. Since the interruption unit 14 and the current detection unit 15 for detecting the current are provided, the current flowing through the load is detected, and the constant current IK corresponding to the inrush current or the short-circuit current is supplied based on the detected current value, or the constant current IK When the constant current IK has passed the predetermined time TK, the state information JS (shutoff request) is transmitted to the branch / control unit 2 and is determined based on the shutoff command (shutoff command DOFF) from the branch / control unit 2. The current IK can be interrupted, and the short-circuit load can be interrupted with a simple configuration of flowing the constant current IK and monitoring the constant current IK for a predetermined time TK.

図10はこの発明に係る表示部の一実施の形態イメージ図である。図10において、分岐/制御手段2の表示部11は、分岐出力手段3(3a〜3d)に対応した4CH(チャネル)のLCD、LED(赤)、LED(緑)、リセットキー、遮断キー、外部機器接続およびコネクタCNとスピーカSPを備える。   FIG. 10 is an image diagram of an embodiment of a display unit according to the present invention. In FIG. 10, the display unit 11 of the branch / control unit 2 includes a 4CH (channel) LCD corresponding to the branch output unit 3 (3a to 3d), LED (red), LED (green), reset key, cutoff key, External device connection and connector CN and speaker SP are provided.

LCDは、分岐出力手段3a〜3dの状態である「遮断」、通常の負荷動作を表す「動作」、起動しているにも拘わらず、負荷が接続されていない電流が流れない「停止」の状態を表す。   The LCD is in the state of “interruption” which is the state of the branch output means 3a to 3d, “operation” representing normal load operation, and “stop” in which no current is connected to the load even though it is activated. Represents a state.

LED(赤)は、負荷短絡で電流が遮断された状態を示し、LED(緑)は、定常負荷で正常に動作していることを表す。   LED (red) indicates a state in which current is interrupted by a load short circuit, and LED (green) indicates that the device is operating normally under a steady load.

リセットキーは、分岐出力手段3(例えば、分岐出力手段3a)が遮断された場合、負荷の異常を保守して、再起動をかける時に操作する。   When the branch output unit 3 (for example, the branch output unit 3a) is shut off, the reset key is operated when the load is maintained and restarted.

遮断キーは、強制的に分岐出力手段3(例えば、分岐出力手段3a)を遮断する時に操作する。   The shutoff key is operated when the branch output means 3 (for example, the branch output means 3a) is forcibly shut off.

スピーカSPは、分岐出力手段3(例えば、分岐出力手段3a)が遮断された場合、アラーム音を出力する。   The speaker SP outputs an alarm sound when the branch output means 3 (for example, the branch output means 3a) is interrupted.

外部機器接続コネクタCNは、分岐出力手段3(分岐出力手段3a〜3d)の状態を外部機器(例えば、パーソナルコンピュータ)に送信するためのコネクタである。   The external device connector CN is a connector for transmitting the state of the branch output means 3 (branch output means 3a to 3d) to an external device (for example, a personal computer).

図11はこの発明に係る回路保護装置の基本概念イメージ図である。図11において、本発明を適用しない場合の実際の突入電流IRおよび短絡電流ISを破線で表す。<コンデンサ突入電流>の場合、突入電流IRの過大電流IPを瞬時(過大電流検出時間tα)に検出し、定電流IKで容量負荷充電時間TAの時間流し、その後定常負荷電流ILで継続して流す。これにより、容量性負荷に対して分岐出力手段を停止することなく、定電流IK→定常負荷電流ILの電流で継続して電流を流すことができる。   FIG. 11 is a basic conceptual image diagram of the circuit protection device according to the present invention. In FIG. 11, the actual inrush current IR and short circuit current IS when the present invention is not applied are represented by broken lines. In the case of <capacitor inrush current>, an excessive current IP of the inrush current IR is detected instantaneously (excess current detection time tα), the constant current IK is passed for the capacity load charging time TA, and then the steady load current IL is continued. Shed. As a result, the current can be continuously supplied from the constant current IK to the steady load current IL without stopping the branch output means for the capacitive load.

また、負荷の<途中短絡>の場合、定常負荷電流ILが流れている状態から、負荷が短絡すると、短絡電流ISの過大電流IPを瞬時(過大電流検出時間tα)に検出し、定電流IKで所定時間TKの時間流し、その後定電流IKを遮断する。   Also, in the case of <short circuit in the middle> of the load, when the load is short-circuited from the state where the steady load current IL is flowing, the overcurrent IP of the short-circuit current IS is detected instantaneously (overcurrent detection time tα), and the constant current IK Then, the constant current IK is cut off for a predetermined time TK.

さらに、負荷の<初期短絡>の場合、初期に短絡電流ISの過大電流IPを瞬時(過大電流検出時間tα)に検出し、定電流IKで所定時間TKの時間流し、その後定電流IKを遮断する。   Furthermore, in the case of <initial short circuit> of the load, the excessive current IP of the short circuit current IS is detected instantaneously (overcurrent detection time tα) at the initial stage, and the constant current IK is passed for a predetermined time TK, and then the constant current IK is cut off. To do.

以上説明したように、この発明に係る回路保護装置1は、負荷に流れる突入電流や短絡電流を定電流IKで抑制し、定電流IKによる抑制時間が所定時間TKを超える場合には状態情報JSを出力し、遮断指令DOFFによって負荷への定電流を遮断する負荷対応の分岐出力手段3a〜3dと、直流電源出力VDCを分岐出力手段3a〜3dに分岐して供給するとともに、それぞれの分岐出力手段3a〜3dの状況を監視し、状況に応じた制御を実行する分岐/制御手段2とを備えたので、分岐出力手段3a〜3dは、容量性負荷の突入電流に対して定電流IKで抑制し、容量性負荷の充電と、容量性負荷に継続して定常負荷電流ILを流すとともに、短絡負荷の短絡電流に対して定電流IKで抑制し、定電流IKが所定時間TK経過すると、状態情報JS(遮断要求)を分岐/制御手段2に送信し、分岐/制御手段2から提供される遮断指令DOFFを受けて短絡負荷に流す定電流IKを遮断することができ、容量性負荷や抵抗負荷の変更に対応し、他の負荷の駆動に影響を及ぼすこともなく、利便性の向上をアピールすることができる。   As described above, the circuit protection device 1 according to the present invention suppresses the inrush current and the short circuit current flowing through the load with the constant current IK, and the state information JS when the suppression time due to the constant current IK exceeds the predetermined time TK. The branch output means 3a to 3d corresponding to the load which cuts off the constant current to the load by the cutoff command DOFF, and the DC power supply output VDC is supplied to the branch output means 3a to 3d and supplied to the branch output means. Since the branch / control means 2 is provided for monitoring the status of the means 3a to 3d and executing control according to the situation, the branch output means 3a to 3d are provided with a constant current IK with respect to the inrush current of the capacitive load. Suppress and charge the capacitive load, and continuously flow the steady load current IL to the capacitive load, and suppress the short-circuit current of the short-circuit load with the constant current IK. When the constant current IK elapses for a predetermined time TK, Status information JS (blocking Request) is transmitted to the branch / control means 2, and the constant current IK flowing to the short-circuit load in response to the shutoff command DOFF provided from the branch / control means 2 can be interrupted to change the capacitive load or the resistance load. Correspondingly, the convenience can be improved without affecting the driving of other loads.

続いて、短絡電流遮断方法について説明する。図12はこの発明に係る回路保護装置の短絡電流遮断方法の一実施の形態動作フロー図である。なお、図3を参照して説明する。図12において、この発明に係る回路保護装置の短絡電流遮断方法は、電源装置を接続し、電源装置の直流電源出力を複数の負荷に分岐して供給する回路保護装置の短絡電流遮断方法であって、ステップS1では、短絡時の過大電流を検出する。なお、ステップS1の動作は、電流検出部15が実行する。   Then, the short circuit current interruption method will be described. FIG. 12 is an operation flowchart of one embodiment of the circuit protection device short-circuit current interruption method according to the present invention. This will be described with reference to FIG. In FIG. 12, the circuit protection device short-circuit current interruption method according to the present invention is a circuit protection device short-circuit current interruption method in which a power supply device is connected and the DC power supply output of the power supply device is branched and supplied to a plurality of loads. In step S1, an excessive current at the time of a short circuit is detected. In addition, the operation | movement of step S1 is performed by the electric current detection part 15. FIG.

ステップS2では、瞬時遮断を動作させ、遮断部を一時遮断する。なお、ステップS2の動作は、瞬時遮断部14および遮断部13が実行する。   In step S2, instantaneous interruption is activated to temporarily interrupt the interruption part. In addition, the operation | movement of step S2 is performed by the instantaneous interruption | blocking part 14 and the interruption | blocking part 13. FIG.

ステップS3では、定電流を流す。なお、ステップS3の動作は、定電流部12が実行する。   In step S3, a constant current is passed. The operation of step S3 is executed by the constant current unit 12.

ステップS4では、定電流を検出する。なお、ステップS4の動作は、電流検出部15が実行する。   In step S4, a constant current is detected. The operation of step S4 is executed by the current detection unit 15.

ステップS5では、定電流が所定時間を超えたか否かを判定する。なお、ステップS5は、電流検出部15が実行する。   In step S5, it is determined whether or not the constant current has exceeded a predetermined time. Note that step S5 is executed by the current detection unit 15.

ステップS6では、所定時間を超えた場合には、状態情報を送信する。なお、ステップS6の動作は、電流検出部15が実行する。   In step S6, status information is transmitted when the predetermined time is exceeded. The operation of step S6 is executed by the current detection unit 15.

ステップS7では、遮断指令を受けて定電流部および遮断部を完全に遮断する。なお、ステップS7の動作は、動作/遮断駆動部16が実行する。   In step S7, the constant current part and the interruption part are completely interrupted in response to the interruption command. Note that the operation / interruption drive unit 16 executes the operation of step S7.

このように、この発明に係る回路保護装置の短絡電流遮断方法は、短絡時の過大電流を検出するステップS1と、瞬時遮断を動作させ、遮断部を一時遮断するステップS2と、定電流を流すステップS3と、定電流を検出するステップS4と、定電流が所定時間を超えたか否かを判定するステップS5と、所定時間を超えた場合には、状態情報を送信するステップS6と、遮断指令を受けて定電流部および遮断部を完全に遮断するステップS7とを備えたので、負荷短絡が発生しても、過大な短絡電流を流さずに、定電流で抑制して、所定時間経過後に定電流を遮断することができ、装置を過電流から保護するとともに、他の負荷動作に及ぼす影響を無くすることができる。   Thus, the short circuit current interruption method for the circuit protection device according to the present invention includes the step S1 for detecting an excessive current at the time of the short circuit, the step S2 for operating the instantaneous interruption and temporarily interrupting the interruption part, and the constant current flow. Step S3, Step S4 for detecting a constant current, Step S5 for determining whether or not the constant current has exceeded a predetermined time, Step S6 for transmitting status information when the predetermined time has been exceeded, and an interruption command And step S7 for completely shutting off the constant current section and the shut-off section, even if a load short circuit occurs, it is suppressed with a constant current without passing an excessive short-circuit current, and after a predetermined time has elapsed. The constant current can be cut off, the device can be protected from overcurrent, and the influence on other load operations can be eliminated.

本発明に係る回路保護装置は、容量性負荷や抵抗負荷の変更に対応でき、突入電流や短絡電流を定電流で抑制し、容量性負荷に対して電源を遮断することなく継続して駆動するとともに、短絡負荷に対しては定電流を所定時間流した後に電流を遮断することによって、他の負荷の駆動に影響を及ぼさないもので、容量性負荷や短絡負荷に対応するあらゆる回路保護装置に適用することができる。   The circuit protection device according to the present invention can cope with the change of the capacitive load and the resistive load, suppress the inrush current and the short-circuit current with a constant current, and continuously drive the capacitive load without shutting off the power source. At the same time, a constant current is applied to the short-circuit load for a predetermined time, and then the current is cut off, so that it does not affect the driving of other loads. Can be applied.

この発明に係る回路保護装置の実施の形態全体構成図Overall configuration diagram of an embodiment of a circuit protection device according to the present invention この発明に係る分岐/制御手段の一実施の形態要部ブロック構成図Block diagram of principal part of one embodiment of branching / control means according to the present invention この発明に係る分岐出力手段の一実施の要部形態ブロック構成図Block diagram of main part form of one embodiment of branch output means according to the present invention この発明に係る電流検出部の一実施の形態要部ブロック構成図Block diagram of main part of one embodiment of a current detection unit according to the present invention この発明に係る分岐出力手段の一実施の形態要部回路構成図One embodiment of a circuit configuration diagram of a branch output means according to the present invention この発明に係る抵抗負荷に流れる電流の一実施の形態動作シーケンス図Operation sequence diagram of one embodiment of current flowing through a resistance load according to the present invention この発明に係る容量性負荷に流れる電流の一実施の形態動作シーケンス図Operation sequence diagram of an embodiment of a current flowing through a capacitive load according to the present invention この発明に係る定常負荷から短絡負荷になる場合に流れる電流の一実施の形態動作シーケンス図Operation sequence diagram of one embodiment of a current that flows when a steady load according to the present invention becomes a short-circuit load この発明に係る負荷の初期短絡に流れる電流の一実施の形態動作シーケンス図Operation sequence diagram of one embodiment of current flowing in initial short circuit of load according to the present invention この発明に係る表示部の一実施の形態イメージ図An image of an embodiment of a display unit according to the present invention この発明に係る回路保護装置の基本概念イメージ図Basic concept image diagram of circuit protection device according to the present invention この発明に係る回路保護装置の短絡電流遮断方法の一実施の形態動作フロー図Operation flow diagram of one embodiment of a short circuit current interruption method for a circuit protection device according to the present invention

符号の説明Explanation of symbols

1 回路保護装置
2 分岐/制御手段
3,3a,3b,3c,3d 分岐出力手段
4 制御部
5 記憶部
6 リセット部
7 遮断トリガ入力部
8 外部通信部
9 内部電源部
10 アラーム出力部
11 表示部
12 定電流部
12a 定電流回路
13 遮断部
13a 遮断回路
14 瞬時遮断部
14a 瞬時遮断回路
15 電流検出部
16 動作/遮断駆動部
17 電流値検知部
18 タイマ
19 送信部
20 直流電源
l1〜l4 接続ライン
Q1,Q2 MOSFET
ZD ツェナーダイオード
OP1 差動増幅器
OP2,OP3 コンパレータ
TRa,TRb 動作/遮断用トランジスタ
TR1,TR2 トランジスタ
RD 電流検出用抵抗器
RX 定電流用抵抗器
VDC 直流電源
I 電流
IL 定常負荷電流
IP 過大電流
IR 突入電流
IK 定電流
IS 短絡電流
TK 所定時間
TA 容量負荷充電時間
tα 過大電流検出時間
DON 駆動指令
DOFF 遮断指令
SD 遮断信号
DG 表示データ
JA アラーム情報
JS 状態情報
JT リセット情報
JG 遮断トリガ情報
VF1,VF2 基準電圧

DESCRIPTION OF SYMBOLS 1 Circuit protection device 2 Branch / control means 3, 3a, 3b, 3c, 3d Branch output means 4 Control part 5 Memory | storage part 6 Reset part 7 Shut off trigger input part 8 External communication part 9 Internal power supply part 10 Alarm output part 11 Display part DESCRIPTION OF SYMBOLS 12 Constant current part 12a Constant current circuit 13 Interrupting part 13a Interrupting circuit 14 Instantaneous interruption part 14a Instantaneous interruption circuit 15 Current detection part 16 Operation / interruption drive part 17 Current value detection part 18 Timer 19 Transmission part 20 DC power supply 11 to 14 Connection line Q1, Q2 MOSFET
ZD Zener diode OP1 Differential amplifier OP2, OP3 Comparator TRa, TRb Operation / cutoff transistor TR1, TR2 Transistor RD Current detection resistor RX Constant current resistor VDC DC power supply I Current IL Steady load current IP Overcurrent IR Inrush current IK Constant current IS Short-circuit current TK Predetermined time TA Capacity load charging time tα Excess current detection time DON Drive command DOFF Shutdown command SD Shutdown signal DG Display data JA Alarm information JS Status information JT Reset information JG Shutdown trigger information VF1, VF2 Reference voltage

Claims (11)

電源装置を接続し、前記電源装置の直流電源出力を複数の負荷に分岐して供給する回路保護装置であって、
前記負荷に流れる突入電流や短絡電流を定電流で抑制し、定電流による抑制時間が所定時間を超える場合には状態情報を出力し、遮断指令によって前記負荷への定電流を遮断する前記負荷対応の分岐出力手段と、前記直流電源出力を前記分岐出力手段に分岐して供給するとともに、それぞれの分岐出力手段の状況を監視し、状況に応じた制御を実行する分岐/制御手段と、を備えたことを特徴とする回路保護装置。
A circuit protection device for connecting a power supply device and branching and supplying a DC power output of the power supply device to a plurality of loads,
Inrush current and short-circuit current flowing in the load are suppressed with a constant current, and when the suppression time by the constant current exceeds a predetermined time, status information is output, and the load corresponding to interrupting the constant current to the load by a cutoff command A branch output means, and a branch / control means for branching and supplying the DC power supply output to the branch output means, monitoring the status of each branch output means, and executing control according to the status. A circuit protection device.
前記分岐出力手段は、突入電流や短絡電流を定電流で抑制する定電流部、電流を遮断する遮断部、過大電流に対して瞬時に反応する瞬時遮断部、電流を検出する電流検出部を備えたことを特徴とする請求項1記載の回路保護装置。 The branch output means includes a constant current portion that suppresses inrush current and short-circuit current with a constant current, a cutoff portion that cuts off the current, an instantaneous cutoff portion that reacts instantaneously to an excessive current, and a current detection portion that detects current. The circuit protection device according to claim 1. 前記瞬時遮断部は、過大電流を瞬時に検出し、前記遮断部を瞬時に遮断することを特徴とする請求項2記載の回路保護装置。 3. The circuit protection device according to claim 2, wherein the instantaneous interruption unit instantaneously detects an excessive current and instantaneously interrupts the interruption unit. 前記電流検出部は、過大電流を検出した場合、前記遮断部に遮断信号を供給して前記遮断部を遮断することを特徴とする請求項2記載の回路保護装置。 3. The circuit protection device according to claim 2, wherein, when an excessive current is detected, the current detection unit supplies a blocking signal to the blocking unit to block the blocking unit. 前記電流検出部は、電流値を検知する電流値検知部と、定電流の継続時間を計時するタイマと、前記電流値検知部が検知した電流値に基づき、または前記タイマが所定時間越えて定電流を計時した場合に、状態情報を前記分岐/制御手段に送信する送信部と、を備えたことを特徴とする請求項2または請求項4記載の回路保護装置。 The current detection unit includes a current value detection unit that detects a current value, a timer that counts a constant current duration, a current value detected by the current value detection unit, or a time that exceeds a predetermined time. The circuit protection device according to claim 2, further comprising: a transmission unit configured to transmit state information to the branch / control unit when the current is measured. 前記タイマは、所定時間を変更可能なことを特徴とする請求項5記載の回路保護装置。 6. The circuit protection device according to claim 5, wherein the timer can change a predetermined time. 前記定電流部は、定電流を変更可能なことを特徴とする請求項2記載の回路保護装置。 The circuit protection device according to claim 2, wherein the constant current unit can change a constant current. 前記分岐出力手段は、前記分岐/制御手段から提供される指令に基づいて前記定電流部および前記遮断部の動作/遮断を駆動する動作/遮断駆動部を備えたことを特徴とする請求項1記載の回路保護装置。 2. The branch output unit includes an operation / cutoff drive unit that drives operation / cutoff of the constant current unit and the cutoff unit based on a command provided from the branch / control unit. The circuit protection device as described. 前記分岐/制御手段は、装置全体の動作を制御する制御部と、状態情報に基づいて各分岐出力手段の状態を記憶する記憶部、各分岐出力手段に指令を発生するリセット部と、各分岐出力手段を強制的に遮断する遮断トリガを入力する遮断トリガ入力部と、外部機器に各分岐出力手段の状態情報を送信する外部通信部、装置に必要とされる各種電源を供給する内部電源部、各分岐出力手段の遮断を通知するアラーム出力部、各分岐出力手段の動作または遮断を表示する表示部と、を備えたことを特徴とする請求項1記載の回路保護装置。 The branch / control unit includes a control unit that controls the operation of the entire apparatus, a storage unit that stores the state of each branch output unit based on state information, a reset unit that generates a command to each branch output unit, and each branch A shutoff trigger input section for inputting a shutoff trigger for forcibly shutting off the output means, an external communication section for transmitting status information of each branch output means to an external device, and an internal power supply section for supplying various power sources required for the apparatus 2. The circuit protection device according to claim 1, further comprising: an alarm output unit for notifying that each branch output unit is shut off; and a display unit for displaying the operation or block of each branch output unit. 前記制御部は、前記直流電源がオン状態からオフ状態になる直前の各分岐出力手段の状態を前記記憶部に保持し、前記直流電源がオフ状態からオン状態になった時、前記記憶部に保持された状態と同じ状態から動作の開始を制御することを特徴とする請求項9記載の回路保護装置。 The control unit holds the state of each branch output unit immediately before the DC power source is turned off from the on state in the storage unit, and when the DC power source is turned on from the off state, 10. The circuit protection device according to claim 9, wherein the start of operation is controlled from the same state as the held state. 電源装置を接続し、前記電源装置の直流電源出力を複数の負荷に分岐して供給する回路保護装置の短絡電流遮断方法であって、
短絡時の過大電流を検出するステップS1と、
瞬時遮断を動作させ、遮断部を一時遮断するステップS2と、
定電流を流すステップS3と、
定電流を検出するステップS4と、
定電流が所定時間を超えたか否かを判定するステップS5と、
所定時間を超えた場合には、状態情報を送信するステップS6と、
遮断指令を受けて定電流部および遮断部を完全に遮断するステップS7と、
を備えたことを特徴とする回路保護装置の短絡電流遮断方法。

A short-circuit current interruption method for a circuit protection device that connects a power supply device and branches and supplies a DC power supply output of the power supply device to a plurality of loads,
Step S1 for detecting an excessive current at the time of a short circuit;
Step S2 for operating the instantaneous interruption and temporarily interrupting the interruption part;
Step S3 for passing a constant current;
Step S4 for detecting a constant current;
Step S5 for determining whether or not the constant current exceeds a predetermined time;
If the predetermined time has been exceeded, step S6 for transmitting status information;
Step S7 which receives the cutoff command and completely shuts off the constant current portion and the cutoff portion;
A method for interrupting a short circuit current of a circuit protection device.

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